What is a variable?

O

A. A summary of another scientist's work

O

B. An educated guess about the outcome of an experiment

O

C. Something that can change during an experiment

O

D. The analysis of the results of an experiment

When air is heated enough so that it is warmer than the surrounding air, it is?

A student hears a police siren. What would change the frequency that the student hears? Check all that apply. * 1. if the student walked toward the police car 2. if the student walked away from the police car 3.

Most alcohilic attribute deaths are caused by?

explain how stability and toxicity can work together to increase the effect of a chemical on the environment

Explain why a moving object can be in equilibrium

Why did the chicken cross the road.

A 98.1 kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.69 rad/s. A monkey drops a 9.29 kg bunch of bananas vertically onto the platform.

7. A type of non-renewable energy would be: O wind O petroleum O water solar

A refrigerator is a system. The energy input into the refrigerator system (in the form of electricity) is the same as the amount of energy output from the system. Which of the following best describes the energy output of the system?

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.